i have a tappin sound in my engine... just reciently rebuilt it.. any ideas ?

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Ajust valve lash....Show more

Without knowing what make or model or how extensive a rebuild it is pretty tough to give an educated answer. Going out on a limb you probably have a valve or valves that aren't properly adjusted. Hopefully it's not anything more serious than that. If the noise is in the top of the engine it's probably a valve adjustment. If it is in the bottom of the engine then it could be a number of things: Wrist pin, rod bearing, main bearing and etc. Some engines have a little bit of noise from the get go. Good luck....Show more

it could be a number of things, your best bet is to go back to where the engine was rebuilt and let them look at it. it could be something as simple as a valve adjustment. ...Show more

Without having any idea what you rebuilt recently, or what vehicle
this is.

I'm going to guess and say it's your valves that are improperly
adjusted...

Just a guess here....Show more